Plants and timbers. What a great look! I don't have a spot like this, but why not just do this somewhere in your yard against a fence even with a garden area. Nice to have your herbs separated from other plants anyway.

Succulent tree trunk - instructions are not in English but the idea is pretty basic. Tree trunk + removal of some wood + soil, water & succulents = awesomeness in your garden! You could even hang this from a patio at eye height.